The moment Li Su entered the Demon-Subduing Hall, he froze, unable to keep the surprise from showing on his face.
Before coming here, he had imagined many possibilities.
But he had never imagined it would look like this.
Back then, in order to settle the Xia Kingdom clansmen, he had made adjustments to the Demon-Subduing Hall.
He had directly taken out a planet the Heavenly Emperor had stored within it and used it to house the people of the Xia Kingdom.
To that end, he had specifically opened a channel to allow the spiritual energy of heaven and earth to flow inside, restoring spirituality to that planet, whose spiritual energy had been nearly exhausted.
Of course, there were not actually that many people in the Xia Kingdom.
Even counting everyone, there were only two hundred million. Even if they were all awakened at once, they would find it hard to fill an entire planet.
Thus, Li Su had also made some concealments, opening up only an area roughly the size of the Mortal Realm from his previous life.
It was not that he was stingy or unwilling to grant them more space. It was because of the spiritual energy. As the saying went, the larger the area, the greater the concentration of spiritual energy required.
Filling an entire planet—even in a place like the Mythical Realm, where extraordinary power was abundant—would likely cause an enormous commotion.
Not to mention that the spiritual energy of the Mythical Realm naturally carried a trace of Evil Nature, deeply entwined within it. Even an immortal artifact like the Demon-Subduing Hall would find filtering it extremely troublesome. It was better to limit the amount of spiritual energy, at least ensuring that the people of the Xia Kingdom inside would not mutate under Evil Nature's influence.